Method and apparatus for communication establishment for wireless power transfer
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsJin Su Jang, Zeung Il Kim, Taek Hyun Jung
Life of this patent
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Abstract
A connection establishment method, performed by an electric vehicle (EV) being supplied power from a power supply device, may include scanning beacon broadcast in a low-level communication scheme from a plurality of chargers; selecting a beacon signal having a minimum signal attenuation by calculating signal attenuations for a plurality of scanned beacon signals; and establishing a communication connection with an electric vehicle supply equipment (EVSE) associated with a charger transmitting the beacon signal having the minimum signal attenuation.
Claims16
A connection establishment method, performed by an electric vehicle (EV) being supplied power from a power supply device, the connection establishment method comprising:
- scanning beacon broadcast in a low-level communication scheme from a plurality of chargers;
- calculating signal attenuations for a plurality of scanned beacon signals;
- selecting an electric vehicle supply equipment (EVSE) associated with a charger of the plurality of chargers that transmits a first beacon signal having the minimum signal attenuation;
- confirming whether a first EVSE information acquired through the first beacon signal matches a second EVSE information in a vendor specific element (VSE) information acquired through a probe response with the selected EVSE or a wireless local area network (WLAN) beacon from the selected EVSE;
- establishing a communication connection with the selected EVSE when the first and second EVSE information are matched;
- after establishing the communication connection with the selected EVSE, comparing signal attenuation of the first beacon signal with a signal attenuation of a second beacon signal of the plurality of beacon signals transmitted by another charger of the plurality of chargers associated with another EVSE with which a communication connection has not been established;
- and
- determining whether the signal attenuation value of the first beacon signal is lower than the signal attenuation value of the second beacon signal and whether a position alignment for wireless power transfer of the EV is completed;
- wherein the calculating, selecting, confirming, establishing, comparing, and determining are repeated when the signal attenuation value of the first beacon signal is greater than or equal to the signal attenuation value of the second beacon signal or when the position alignment is not completed.
A communication establishment apparatus of an electric vehicle (EV) being supplied power from a power supply device, the communication establishment apparatus comprising:
- a processor;
- and
- a memory configured to store processor-readable instructions that, when executed by the processor, cause the processor to:
- scan beacon broadcast in a low-level communication scheme from a plurality of chargers;
- calculate signal attenuations for a plurality of scanned beacon signals;
- select an electric vehicle supply equipment (EVSE) associated with a charger of the plurality of chargers that transmits a first beacon signal having the minimum signal attenuation;
- confirm weather a first EVSE information acquired through the first beacon signal matches a second EVSE information in a vendor specific element (VSE) information acquired through a probe response with the selected EVSE or a wireless local area network (WLAN) beacon from the selected EVES;
- establish a communication connection with the selected EVSE when the first and second EVSE information are matched;
- after establishment of the communication connection with the selected EVSE, compare the signal attenuation of the first beacon signal with a signal attenuation of a second beacon signal of the plurality of beacon signals transmitted by another charger of the plurality of chargers associated with another EVSE with which a communication connection has not been established;
- and
- determine weather the signal attenuation value of the first beacon signal is lower than the signal attenuation value of the second beacon signal and whether a position alignment for wireless power transfer of the EV is completed;
- wherein the calculation, selection, confirmation, establishment, comparison, and determination are repeated when the signal attenuation value of the first beacon signal is greater than or equal to the signal attenuation value of the second beacon signal or when the position alignment is not completed.
Dependencies are inferred from the claim text.